10 Mar
2022
10 Mar
'22
2:10 a.m.
On Sun, Mar 6, 2022 at 6:02 PM Kevin Bowling <kevin.bowling(a)kev009.com> wrote:
I see a copy of 2.0 for 3B2 (i.e.
https://archives.loomcom.com/3b2/software/Documenters_Workbench/)
From there things get a little less clear, it seems like we jump to
3.2 with SysVR3.2?
Then there is a 3.3 version https://github.com/n-t-roff/DWB3.3
Can anyone firm this lineage up a bit; and is 4.x an SGI thing or what
(I extracted the image, the relnotes inside might as well not exist).
Regards,
Kevin
I'd be interested to pin down the timeline and the major feature changes
for DWB in relation to the other troff variants as well. Below is a
summary of my understanding from looking at the changelogs and spot
checking the various codebases. Any additions or corrections would be
appreciated.
1979 v7 C/A/T troff released (rewritten from assembler into C)
1980-81 v7 C/A/T troff pulled into System III internally at Bell Labs
seemingly without major changes and released in 1982
1982 public domain typesetter independent troff (ditroff or titroff) was
the last free release as a standalone set of files on request
1983 SVR1 bundled C/A/T troff from 1981
1984 SVR2 containing DWB 2.0 incorporating ditroff (no postscript
output yet though)
1987 SVR3 unbundled all troff versions and offered DWB 2+ as
an add-on package
1988 postscript output added to DWB 2+
1989 SVR4 bundled DWB 2+ (Solaris and Unixware) with changes
through mid-1988
198907 DWB 3.0 changed font tables to ascii from old binary format
199004 DWB 3.1 retired nroff for monolithic troff binary with -a flag
for simplified ascii output (for example, tables are not formatted
for true hardcopy output in ascii format)
I think sqtroff from Softquad was primarily sold from 1987-88 and the
main enhancement was more detailed error tracing with an improved
ditroff output language including early laserjet and postscript support.
I've only seen mentions of sqtroff 2.x releases in that timeframe.
I've been looking for the Softquad documentation and software
without much luck; apparently James Clark had a copy of the
Technical Reference manual (ISBN 0-88910-326-7) that he
used to write groff.
Best,
Dan Plassche